You cant truly function without being mentally developed?
You center a lens to get better resolution and to open up the whole image
Answer: One factor is having the child raised around or in a negative environment.
Another factor is not uplifting the child. Disrespecting and/or belittling the child can cause low self-esteem which could tag along for the rest of the kid's life .
Define objectives and standards, measure performance, compare progress, take required action.